Periodic Table of the Elements

H   He
Li Be   B C N O F Ne
NaMg   AlSiPSClAr
KCa ScTiVCr MnFeCoNi CuZn GaGeAsSeBrKr
RbSr YZrNbMoTc RuRhPdAgCd InSnSbTeIXe
CsBa * HfTaWReOs IrPtAuHg TlPbBiPoAtRn
FrRa ** RfDbSgBhHs MtDsRgCn NhFlMcLvTsOg
LaCePrNd PmSmEuGdTb DyHoErTmYbLu
AcThPaU NpPuAmCmBk CfEsFmMdNoLr